Home
Class 12
CHEMISTRY
Why is cryolite added with alumina durin...

Why is cryolite added with alumina during extraction of aluminium?

Text Solution

Verified by Experts

Cryolite is added with alumina during extraction of aluminium because it lowers the melting point of th e mixture from `2050^(@)C` to `900^(@)C` and improves the electrical conductivity of the cell.
Promotional Banner

Topper's Solved these Questions

  • MODEL QUESTION PAPER

    CHHAYA PUBLICATION|Exercise Answer the following question (set-2)|130 Videos

  • HYDROGEN

    CHHAYA PUBLICATION|Exercise PRACTICE SET -9|5 Videos

  • MODEL QUESTIONS PAPER

    CHHAYA PUBLICATION|Exercise SET III (SECTION II) (GROUP D )|12 Videos

Similar Questions

Explore conceptually related problems

What are cryolite and fluorspar added in alumina during extraction of aluminium?

What is the role played by flux during extraction of a metal?

What is the role of cryolite and fluorspar in the extraction of aluminium from pure alumina?

What is the significance of leaching in the extraction of aluminium?

Cryolite is added to alumina in the electrolytic production of the aluminium for

Explain why is silica added into the Bessemer converter during extraction of copper by self-reduction process.

Extraction of aluminium from bauxite

When CaF_(2) is added to pure Al_(2)O_(3) in the extraction of aluminium by Hall and Heroult process -

Mention the substances used as cathode and anode in the Hall-Heroult process (electrolytic reduction) for the extraction of aluminium.

Write the composition of electrolytes used in the extraction of aluminium by electrolytic process. Write the chemical reactions occuring at the two electrodes.

CHHAYA PUBLICATION-MODEL QUESTION PAPER -Answer the following question (set-3)
  1. For a standard cell, Cu(s)|Cu^(2+)(0.01M)||Ag^(+)(0.02M)|Ag(s) E(C...

    Text Solution

    |

  2. For a standard cell, Cu(s)|Cu^(2+)(0.01M)||Ag^(+)(0.02M)|Ag(s) E(C...

    Text Solution

    |

  3. Why is cryolite added with alumina during extraction of aluminium?

    Text Solution

    |

  4. Describe the oxidising action of potassium di chromate in H2SO4 soluti...

    Text Solution

    |

  5. Identify A to F:

    Text Solution

    |

  6. What is the function of anhydrous ZnCl2 in Lucas test for distinction ...

    Text Solution

    |

  7. An ether A (C5H(12)O) when heated with excess hot concentrated HI prod...

    Text Solution

    |

  8. An organic compound A (C2H3N) is used as a solvent of choice for many ...

    Text Solution

    |

  9. Convert: Cyanobenzene to Cinnamic acid

    Text Solution

    |

  10. Identify A to F: The two strands in DNA are not identical but com...

    Text Solution

    |

  11. Identify A to J:

    Text Solution

    |

  12. Identify A to J: CH3CH2CO2Hoverset((i)I2//"RedP")underset((ii)H2O)t...

    Text Solution

    |

  13. Identify A to J: CH3CHOoverset(dil.NaOH)toCoverset(/\)toD

    Text Solution

    |

  14. Identify A to J: CH3COCH3overset(conc.H2SO4)toE

    Text Solution

    |

  15. Identify A to J: CH3COCloverset((i)CH2N2)underset((ii)H2O //AgO///\)...

    Text Solution

    |

  16. Identify A to J:

    Text Solution

    |

  17. Identify A to J:

    Text Solution

    |

  18. Identify A to J:

    Text Solution

    |

  19. (i) Identify A to F: (CH3COO)2Caoverset(/\)toAoverset(NH2NH2//HCl)un...

    Text Solution

    |

  20. (i) Identify A to F: CH3COCH3overset((i)Mg-Hg//"dry ether")underset(...

    Text Solution

    |